Under high pressure and in presence of nickel cyanide catalyst, acetylene on polymerisation gives:
A
Benzene
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B
Mesitylene
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C
Cyclo-octatetraene
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D
Vinyl acetylene
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Solution
The correct option is C Cyclo-octatetraene In the presence of nickel cyanide as a catalyst and under high pressure, four molecules of ethyne combine to form a tetramer called cycloocta-1,3,5,7-tetraene.